This reminded me...
Found some on the pillars in the center.
But.. Still the old question,
we don't know what these symbols represent.
However, a potentially useful finding is that:
The symbols on these pillars are not the same size as those on the coffins.
But the same size as on the torch of Temple.
This may mean that they are written in two different ways.
Or the symbol next to the coffin is "simplified".
Or, they are two fundamentally different symbolic systems.
So.. Maybe we can just have to wait patiently for new discoveries or new content.